9Trajkov D,Stardelova K,Dimitrova M,et al.Helicobacter pylori and gastric carcinoma.Prilozi,2007,28:39-46.
10Palli D,Masala G,Del Giudice G,et al.CagA+ Helicobacter pylori infection and gastric cancer risk in the EPIC-EURGAST study.Int J Cancer,2007,120:859-867.